Process of producing calcium carbid.



No. 855,476. PATENTEE PRICE. v

PROCESS OF PRODUCING CALCIUM UARBI'D:

APPLICATION FILED NOV. 14, 1905.

Wifn'ssss: jnvnair;

=e-is normally a poor conductor, initit-paths between the electrodes are ,d. The conductivity of the charge increased by using a mixture conw lipieces of coke which lie in conith each other at various points. current of sufficient amperage is then sed between the electrodes and through charge, serving as a resistance-conductor. a charge is thereby heated, its temperature 0 "adually increasing downward by reason of the decreasing cross-section and increasing ran'rentdensity, to a zone where the materials to form carbid and the carbid is rcught into a molten-condition. The car: gradually accumulates in the movable h 14 and when-this is nearly filled, the usher i? of the cylinder 16 is actuated to wave the nuplicate hearth 14 beneath and in contact with the lower face of the casting 8 vMid against the side of the hearth 14; The.

continued movement of the pusher then tcrces the hearth 14 with its charge of carbid gradually out from beneath the bottom of the furnace-chamber and simultaneously moves the duphcate'hearth 14 into position tore- I ceive another body of carbid. The hearth 14 is discharged, as by inverting it, and is then ready to replace the duplicate hearth 14 when the latter is lilled,,the cylinder 16 and piston rod 1? being actuated to move the arth 14 into its original pos1t1on.

liquid. ammonia or other cooling medium is Jillfijtfiii through the chambers of the water ts, casting 8 and hearths, throughout 1 ;irocess, and fresh charge-materials are ate the furnace as required 2 shows the lower end of a furnace which is identical in'its general construction with that of Fig. 1, but which has a hearth consisting of an open trou h 18, divided'transversely into a number 0 abutting sections. The sections are arranged to slide on a bedplate 15, with the flat up er faces of their in contact with the ower faces of the rough sections, thereby preventing the molten furnace-product'from flowing'into the incoming section 18. In operation, the

i row of abutting trough-sections is either continuously or intermittently moved along the bed-plate and beneath the open bottom of tl furnace, and the molten or pasty product 1": ou s into and fills the trough, the portion 1y.- within the dotted lines 20 remaining liqor plastic while the portion filling the outsection 18 is solid or sufficiently rigid vent leakage from the furnace. AS

lledsection leaves the furnace, its conbroken or cut oli'from that in the succeeding section and it is then em tied and transierred tothe rear of the line 0. sec tions.

I claim 1. The process of producing calcium carbid, which consists in smelting the charge by an electrically-heated resistance-conductor, accumulating ,a body ofcarbid, a portion,of said body lying within a movable receptacle and a portion within the smelting chamber, and shifting the receptacle and thereby withdrawing its contents from the portion remaining in the furnace, as set forth.

2. The process of producing calcium carbid, which consists in smelting the charge by interposing it as a resistance-conductor in an electric circuit, accumulating a body of carbid', a portion of said body lying within a movable receptacle and a portion within the smelting chamber, and shifting the receptacle and thereby withdrawing its contents from the portion remaining in the furnace, as set forth.

3. The process of producing calcium carbid, which consists in smelting the charge by interposing it as a resistance-conductor in an electric circuit, increasing the current-density along the path of the current in the charge, accumulating a body of carbid, a

- portion of said body lying within a movable receptacle and a portion within the smelting chamber, and. shifting the receptacle and thereby withdrawing its contents from the an electrically-heated resistance conductor, accumulating a body of carbid, a portion of said body lying within a movable receptacle and a portion within the smelting chamber,

shifting the receptacle and thereby withdrawing its contents from the portion remaining in the furnace, and moving an-empty receptacle into position, as setforth.

5. The process of producing calcium carvbid, whichconsists in progressively smelting the charge by an electrically-heated resist? ance-conductor, accumulating a body of carbid, a portion of said body lying within a movable receptacle and a portion within the smelting chamber, shifting the receptacle and thereby withdrawing its contents from the portionv remaining in the furnace, and

sup ying charge-materials as required, as

set orth.

6. The process of producing calcium carbid, which consists in progressively smelting the charge by interposing it as a resistanceconductor in an electric circuit, accumulating a body of carbid, a portion of said body lying within a movable receptacle and a portion within the smelting chamber, shitting the receptacle and thereby withdrawing its contents from the portion remaining in the furnace, and supplying charge-materials as required, as set forth,

7 The process of producing calcium mir bid, which consists in progressively smelting the charge by interposing it as s resist-enceconductor in an electric circuit, increasing the current-density along the path of the current in the charge, accumulating a body of ca rhid, a portion of said borly lying within a movable receptacle and a portion within the smelting chamber, shifting the receptacle end thereby withdrawing its contents from the portion. remaining in the furnace, and supplying charge-materials as required, as set forth.

8. The process of producing calcium cerbid, which consists in progressively smelting the charge by an electrically-heated resistance-conductor, accumulating in body of carbid :1. ortion of said bod l in Within 9, 2c

movable receptacle and a portion within-the smelting chamber, shifting the receptacle and thereby Withdrawing its contents from the portion rerneining in the furnace, moving an empty receptacle into position, and supplying chm'ge-n'iateriels as required, as set forth.

in testimony whereof, I aflix my signature in presence of two witnesses.

EDGAR F. PRICE.

Witnesses 1 G. E. Cox. D. BURGESS. 

